Ship&#39;s propeller.



Patented Aug. I4, |900. W. W. EDWARDS. SHIPS PRPELLER. (Applcation filed .Tuly 1,5, 1899.)

(No Model.)

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Y Marten STATES PATENT Quinton..

VILEY IVAYMAN EDIVARDS, OF FUSKY, MISSISSIPPI.

SHIPS PROPELLER.

SPECIFICATION forming part of Letters Patent N o. 655,699,dated August 14, 1900. nppuauoniued Ju1y15,1999. saturo. 723,919. (Nomade.)

To all whom it may concern:

Be it known that I, WILEY WAYMAN ED- WARDS, residing at Fusky, in the county of Neshoba and State of Mississippi, have invented a new and useful Ships Propeller, of which the following is a specification.

My invention relates to means for the propulsion of vessels, and more particularly to that class of propelling mechanism in which the well-known screwpropeller is the princi pal feature.

The object of the invention is to provide simple and efficient lneans for increasing the force of such propelling mechanism, and consequently the speed of the vessel, without any corresponding increase in the power by means of which the mechanism is driven.

With this object in view my invention consists in the improved construction, arrangement, and combination of parts hereinafter fully described and afterward specifically pointed out in the appended claim.

In order to enable others skilled inthe art to which my invention most nearly appertaius to make and use the same, I will now proceed to describe its construction and operation, reference being had to the accompanying drawings, forming part hereof, in which- Figure 1 is a longitudinal vertical sectional View through part of a vessel equipped with my invention on the plane indicated by the broken line 1 1 of Fig. 2. verse vertical sectional view on the plane indicated by the broken line 2 2 of Fig. 1. Fig. 3 is a longitudinal horizontal sectional view through part of vessel, showing my invention in a form slightly modified from that illustrated in Figs. 1 and 2. Fig. 4 is a detail sectional view on the plane indicated by the broken line l1 L1 of Fig. 3. Fig. 5 is asimilar view on the plane indicated by the broken line 5 5 of Fig. 3.

Like numerals of reference mark the same parts wherever they occur in the several figures of the drawings. 1

Referring to the drawings by numerals, G indicates the hull of the vessel, through the stern of which, below the water-line, projects a cylindrical tube 7. In this tube is located a screw-propeller S on a shaft 9, which is journaled in a bridge 10, secured in and across the tube, the forward end of the propeller Fig. 2 is a trans-` runningfin contactwith a collar 11 on said bridge. The propeller-shaft extends through the for-ward end of the tube, which thus forms its forward journal, and a suitable stuffing-box 13 is provided on the shaft where it passes into the hull. The shaft inside the hull is coupled to the engine in any approved manner.. The tube is also provided with a upward section 14 forms the penstock of a v turbine wheel 16, mounted therein 011 a vertical shaft 17, which is journaled in suitable bearing 18 in a framework 19 in the vessel and is provided with a stuthng-box 2O where it passes into the hull.

On the turbine-shaft 17 is a bevel gear wheel 21, which engages a similar bevel gear; wheel 22 on a shaft 23, parallel with the pro= peller-shaft 9. AThese shafts 23 and 9 are connected by gear-wheels 24 and 25, (as shown in Fig. 1,) so the propeller and turbine wheel are simultaneously rotated.

y In the operationof the invention the pro peller, driven by the usual engine, drives the water in tube .7 out at the stern and causes a current to be maintained through the tube and its extensions. At the same time the turbine wheel is turned and assists in forcing this current through tube 7, thus rendering easier the action of the propeller. It will of course be understood that the effect of the turbine may be varied by gearing it to run faster or slower with relation to the speed of the propeller by changing the relative sizes of the engaginggear-wheels or byincreasing or diminishing the difference in diameter beV tween the discharge-tube and its extensions.

rIhe bridge 1,0 is shown in this instance as provided with a right-angled flange 102 at each end, riveted or bolted to the inside'of the tube, but any other means of securing it may be employed.

In the modified form illustrated in. Fig. 3 the discharge-tube 7 is entirely outside of the hull, secured thereto by suitable braces 26 IOC and 27. The tube is also entirely horizontal, and the turbine Wheel 1G is mounted onthe propeller-shaft 9 in front of propeller 8, the Water being taken into the open front end of tube 7 and the shaft 9 passed directly into the hull at 28, Where it is provided with a stuffingfboX 29.

While Ihave illustrated and described what I consider to be the best means now known to me for carrying out my invention, I do not wish to be understood as .restricting myself to the eXact forms and constructions shown, as many slight changes therein or Variations therefrom might suggest themselves to the ordinary mechanic, all of which would be clearly included Within the limit and scope of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

In a vessel the combination with a tube consisting of "a horizontal longitudinal section projecting through the hull at the stern, a

lateral horizontal section opening through the side ofthe hull and a Vertical section connecting the two -horizontal sections, the lateral horizontal section and the vertical section loeing of greater diameter than the longitudinal horizontal section, of a propeller mounted on the rear horizontal section, and a turbine wheel mounted on the Vertical section and connected with the propeller for conjoint operation, a horizontal shaft journaled in the longitudinal horizontal section and projected into the hull, a screw-propeller thereon, a Vertical shaft journaled in the vertical section and projected into the hull, an intermediate shaft, in the hull parallel with the propellershaft,intermeshingbevel-gears on the turbine and intermediate shafts and intermeshing gear-Wheels on the intermediate and turbine shafts, substantially as described.

WILEY WAYMAN EDWARDS. Witnesses:

J. C. LAMKIN, G. M. AGENT. 

